 
   (assocEx [this k v]
     (RangeMap. kind (.assocEx m k v) leftfn rightfn))
+
+  (without [this k]
+    (RangeMap. kind (.without m k) leftfn rightfn))
 
 
   clojure.lang.ILookup



(deftype RangeMap [kind ^clojure.lang.IPersistentMap m leftfn rightfn]

  clojure.lang.IPersistentMap


  (toString [this]
    (.toString m))


  java.util.Map

  (size [this]
    (.size m))

  (get [this k]
    (.valAt this k))


  clojure.lang.IHashEq
